Colored resin particle dispersion and inkjet ink

Abstract

A colored resin particle dispersion and an inkjet ink are provided which exhibit excellent color development properties and excellent abrasion resistance. Moreover, a colored resin particle dispersion and an inkjet ink are provided which exhibit excellent color development properties and abrasion resistance, together with superior water resistance and marker resistance. Specifically provided is a colored resin particle dispersion containing colored resin particles, a basic dispersant, and a non-aqueous solvent, wherein the colored resin particles include a colorant, a solid resin and a liquid organic compound having an acidic group. Also provided is an inkjet ink containing this colored resin particle dispersion.

1 . A colored resin particle dispersion comprising colored resin particles, a basic dispersant, and a non-aqueous solvent, wherein the colored resin particles comprise a colorant, a solid resin and a liquid organic compound having an acidic group. 
     
     
         2 . The colored resin particle dispersion according to  claim 1 , wherein the acidic group of the liquid organic compound having an acidic group comprises at least one of a phosphoric acid group, a carboxyl group, a sulfonic acid group, a phosphate ester group, a sulfate ester group, a nitrate ester group, a phosphorous acid group, a phosphonic acid group, and a sulfinic acid group. 
     
     
         3 . The colored resin particle dispersion according to  claim 1 , wherein the acidic group of the liquid organic compound having an acidic group comprises at least one of a phosphoric acid group, a carboxyl group, a phosphonic acid group and a phosphate ester group. 
     
     
         4 . The colored resin particle dispersion according to  claim 3 , wherein the acidic group of the liquid organic compound having an acidic group comprises a phosphoric acid group. 
     
     
         5 . The colored resin particle dispersion according to  claim 3 , wherein the acidic group of the liquid organic compound having an acidic group comprises a carboxyl group. 
     
     
         6 . The colored resin particle dispersion according to  claim 3 , wherein the acidic group of the liquid organic compound having an acidic group comprises a phosphonic acid group. 
     
     
         7 . The colored resin particle dispersion according to  claim 3 , wherein the acidic group of the liquid organic compound having an acidic group comprises a phosphate ester group. 
     
     
         8 . The colored resin particle dispersion according to  claim 1 , wherein the liquid organic compound having an acidic group comprises at least one of a poly(meth)acrylic-based resin having an acidic group, a polyester-based resin having an acidic group, a polyvinyl-based resin having an acidic group, a polyether-based resin having an acidic group, a phosphate ester, a sulfate ester, and a 1-hydroxyethane-1,1-diphosphonic acid. 
     
     
         9 . The colored resin particle dispersion according to  claim 1 , wherein the solid resin comprises at least one of a nitrocellulose, a methoxymethylated nylon, a (meth)acrylic-based resin and a styrene-(meth)acrylic-based resin. 
     
     
         10 . The colored resin particle dispersion according to  claim 9 , wherein the solid resin comprises a nitrocellulose. 
     
     
         11 . The colored resin particle dispersion according to  claim 9 , wherein the solid resin comprises a methoxymethylated nylon. 
     
     
         12 . The colored resin particle dispersion according to  claim 9 , wherein the solid resin comprises a (meth)acrylic-based resin. 
     
     
         13 . The colored resin particle dispersion according to  claim 9 , wherein the solid resin comprises a styrene-(meth)acrylic-based resin. 
     
     
         14 . The colored resin particle dispersion according to  claim 1 , wherein the solid resin comprises at least one of an alkylphenol resin, a polyvinyl alcohol, a (meth)acrylic-based resin, a styrene-(meth)acrylic-based resin, a styrene-maleic acid resin, a cellulose-based resin, a polyvinyl acetal resin, a polyamide resin, a ketone resin, a rosin resin, a vinyl acetate resin, a polyvinylpyrrolidone, a phosphorylated solid resin, a nitrated solid resin, a alkoxy group-containing solid resin, a polysilsesquioxane, a methoxysilsesquioxane, a ethoxysilsesquioxane, and derivatives of these resins. 
     
     
         15 . The colored resin particle dispersion according to  claim 1 , wherein the basic dispersant comprises a (meth)acrylic block polymer having basic groups, and the (meth)acrylic block polymer having basic groups is a copolymer having a first block containing units having an alkyl group with a carbon number of 12 or greater, and a second block containing units having an amino group. 
     
     
         16 . The colored resin particle dispersion according to  claim 1 , wherein the basic dispersant comprises at least one of modified polyurethanes, basic group-containing poly(meth)acrylates, basic group-containing polyesters, polyesteramines, quaternary ammonium salts, alkylamine salts, and fatty acid amine salts. 
     
     
         17 . The colored resin particle dispersion according to  claim 1 , wherein the colorant comprises a pigment. 
     
     
         18 . The colored resin particle dispersion according to  claim 1 , wherein the colorant comprises a dye. 
     
     
         19 . The colored resin particle dispersion according to  claim 1 , wherein the non-aqueous solvent comprises a petroleum-based hydrocarbon solvent. 
     
     
         20 . An inkjet ink comprising the colored resin particle dispersion according to  claim 1 .